87038213 has 4 divisors (see below), whose sum is σ = 87524640. Its totient is φ = 86551788.

The previous prime is 87038207. The next prime is 87038239. The reversal of 87038213 is 31283078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31283078 = 2 ⋅15641539.

It is a cyclic number.

It is not a de Polignac number, because 87038213 - 2²² = 82843909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87038213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87038513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242945 + ... + 243302.

It is an arithmetic number, because the mean of its divisors is an integer number (21881160).

Almost surely, 2^87038213 is an apocalyptic number.

It is an amenable number.

87038213 is a deficient number, since it is larger than the sum of its proper divisors (486427).

87038213 is a wasteful number, since it uses less digits than its factorization.

87038213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486426.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 87038213 is about 9329.4272600198. The cubic root of 87038213 is about 443.1696276246.

The spelling of 87038213 in words is "eighty-seven million, thirty-eight thousand, two hundred thirteen".